Search Results - "Pavlenko, Ya"

Characterization of a Sample of Southern M Dwarfs Using Harps and X-shooter Spectra by Kuznetsov, M. K., del Burgo, C., Pavlenko, Ya. V., Frith, J.

“…We present the homogeneous analysis of a sample of Southern early-type M dwarfs in the solar neighborhood (d < 60 pc). We used the MCAL technique to derive the…”
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STARSPOT DISTRIBUTIONS ON FULLY CONVECTIVE M DWARFS: IMPLICATIONS FOR RADIAL VELOCITY PLANET SEARCHES by Barnes, J. R., Jeffers, S. V., Jones, H. R. A., Pavlenko, Ya. V., Jenkins, J. S., Haswell, C. A., Lohr, M. E.

“…ABSTRACT Since M4.5-M9 dwarfs exhibit equatorial rotation velocities of the order of 10 km s−1 on average, radial velocity surveys targeting this stellar…”
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Surprisingly different star-spot distributions on the near equal-mass equal-rotation-rate stars in the M dwarf binary GJ 65 AB by Barnes, J. R., Jeffers, S. V., Haswell, C. A., Jones, H. R. A., Shulyak, D., Pavlenko, Ya. V., Jenkins, J. S.

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The recurrent nova V3890 Sgr: a near-infrared and optical study of the red giant component and its environment by Kaminsky, B, Evans, A, Pavlenko, Ya V, Woodward, C E, Banerjee, D P K, Gehrz, R D, Walter, F, Starrfield, S, Ilyin, I, Strassmeier, K G, Wagner, R M

“…ABSTRACT We present an analysis of the red giant component of the recurrent nova V3890 Sgr, using data obtained before and after its 2019 eruption. Its…”
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Primeval very low-mass stars and brown dwarfs – VIII. The first age benchmark L subdwarf, a wide companion to a halo white dwarf by Raddi, R, Burgasser, A J, Casewell, S L, Smart, R L, Gálvez-Ortiz, M C, Jones, H R A, Baig, S, Lodieu, N, Gauza, B, Pavlenko, Ya V, Pinfield, D J

“…ABSTRACT We report the discovery of five white dwarf + ultracool dwarf systems identified as common proper motion wide binaries in the Gaia Catalogue of Nearby…”
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Rise and fall of silicate dust in RS Ophiuchi following the 2006 eruption by Rushton, M T, Woodward, C E, Gehrz, R D, Evans, A, Kaminsky, B, Pavlenko, Ya V, Eyres, S P S

“…ABSTRACT We present an analysis of archival Spitzer InfraRed Spectrograph (IRS) observations of the recurrent nova RS Ophiuchi obtained on several occasions,…”
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Primeval very low-mass stars and brown dwarfs – II. The most metal-poor substellar object by Zhang 张曾华, Z. H., Homeier, D., Pinfield, D. J., Lodieu, N., Jones, H. R. A., Allard, F., Pavlenko, Ya. V.

“…Abstract SDSS J010448.46+153501.8 has previously been classified as an sdM9.5 subdwarf. However, its very blue J − K colour (–0.15 ± 0.17) suggests a much…”
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SiO Bands in the Infrared Spectra of Late-Type Stars by Pavlenko, Ya. V.

“…—The importance of taking the SiO absorption in the infrared spectrum into account for spectral analysis of late-type stars is demonstrated. The lists of…”
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Effective temperatures, rotational velocities, microturbulent velocities and abundances in the atmospheres of the Sun, HD 1835 and HD 10700 by Pavlenko, Ya. V., Jenkins, J. S., Jones, H. R. A., Ivanyuk, O., Pinfield, D. J.

“…We describe the procedure to determine effective temperatures, rotational velocities, microturbulent velocities and chemical abundances in the atmospheres of…”
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Gas phase SiO in the circumstellar environment of the recurrent nova T Coronae Borealis by Evans, A, Pavlenko, Ya V, Banerjee, D P K, Munari, U, Gehrz, R D, Woodward, C E, Starrfield, S, Helton, L A, Shahbandeh, M, Davis, S, Dallaporta, S, Cherini, G

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Improved HCN/HNC linelist, model atmospheres and synthetic spectra for WZ Cas by Harris, G. J., Tennyson, J., Kaminsky, B. M., Pavlenko, Ya. V., Jones, H. R. A.

“…We build an accurate data base of 5200 HCN and HNC rotation-vibration energy levels, determined from existing laboratory data. 20 000 energy levels in the…”
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The metal-rich abundance pattern – spectroscopic properties and abundances for 107 main-sequence stars by Ivanyuk, O. M., Jenkins, J. S., Pavlenko, Ya. V., Jones, H. R. A., Pinfield, D. J.

“…Abstract We report results from the high-resolution spectral analysis of the 107 metal-rich (mostly [Fe/H] ≥ 7.67 dex) target stars from the…”
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Determination of abundances in the atmospheres of F-, G-, and K-dwarfs by Pavlenko, Ya. V.

“…The algorithm of the determination of abundances in atmospheres of stars of spectral classes F, G, and K using fits to the observed spectral lines or selected…”
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Old Stars in Young Clusters: Lithium-depleted Low-Mass Stars of the Orion Nebula Cluster by Palla, F, Randich, S, Pavlenko, Ya. V, Flaccomio, E, Pallavicini, R

“…We measured lithium in a sample of low-mass stars (60.1-0.3 M sub((m=o.))) of the Orion Nebula cluster. We find evidence for significant Li depletion in four…”
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Erratum: Gas phase SiO in the circumstellar environment of the recurrent nova T Coronae Borealis by Evans, A, Pavlenko, Ya V, Banerjee, D P K, Munari, U, Gehrz, R D, Woodward, C E, Starrfield, S, Helton, L A, Shahbandeh, M, Davis, S, Dallaporta, S, Cherini, G

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A spectroscopic and proper motion search of Sloan Digital Sky Survey: red subdwarfs in binary systems by Zhang, Z. H., Pinfield, D. J., Burningham, B., Jones, H. R. A., Gálvez-Ortiz, M. C., Catalán, S., Smart, R. L., Lépine, S., Clarke, J. R. A., Pavlenko, Ya. V., Murray, D. N., Kuznetsov, M. K., Day-Jones, A. C., Gomes, J., Marocco, F., Sip cz, B.

“…Red subdwarfs in binary systems are crucial for both model calibration and spectral classification. We search for red subdwarfs in binary systems from a sample…”
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Molecular bands in the spectra of M stars by Pavlenko, Ya. V.

“…The profiles of the main molecular bands in the spectral-energy distributions (SEDs) of M stars have been calculated. The calculations of the individual band…”
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Analysis of Actinium Abundances in the Atmosphere of Cepheid HIP13962 by Gopka, V. F., Shavrina, A. V., Yushchenko, V. A., Pavlenko, Ya. V., Yushchenko, A. V., Glazunova, L. V.

“…Actinium is a radioactive element that has an isotope 227 Ac with the longest half-life of 21.772(3) years. It is the third element in the actinoid group, in…”
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Modelling the spectral energy distribution of the red giant in RS Ophiuchi: evidence for irradiation by Pavlenko, Ya. V., Kaminsky, B., Rushton, M. T., Evans, A., Woodward, C. E., Helton, L. A., O'Brien, T. J., Jones, D., Elkin, V.

“…We present an analysis of optical and infrared spectra of the recurrent nova RS Oph obtained during between 2006 and 2009. The best fit to the optical spectrum…”
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Collision-induced absorption of radiation in the atmospheres of late-type stars by Pavlenko, Ya. V.

“…Problems associated with taking into account absorption induced by collisions between hydrogen and helium atoms, helium atoms and hydrogen molecules, and…”
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